fix: date from integer, #125

test/integration/builtin/filters/date.ts

@@ -1,6 +1,12 @@
 import { test, ctx } from '../../../stub/render'
+import { expect } from 'chai'
+import Liquid from '../../../../src/liquid'
 
 describe('filters/date', function () {
+  let liquid: Liquid
+  beforeEach(function () {
+    liquid = new Liquid()
+  })
   it('should support date: %a %b %d %Y', function () {
     const str = ctx.date.toDateString()
     return test('{{ date | date:"%a %b %d %Y"}}', str)
@@ -17,4 +23,20 @@ describe('filters/date', function () {
   it('should render object as string if not valid', function () {
     return test('{{ obj | date: "%Y"}}', '[object Object]')
   })
+  it('should create from number-like string', async function () {
+    const src = '{{ "1488859200" | date: "%Y-%m-%dT%H:%M:%S" }}'
+    const dst = '2017-03-07T12:00:00'
+    expect(await liquid.parseAndRender(src)).to.equal(dst)
+  })
+  it('should create from number', async function () {
+    const src = '{{ 1488859200 | date: "%Y-%m-%dT%H:%M:%S" }}'
+    const dst = '2017-03-07T12:00:00'
+    expect(await liquid.parseAndRender(src)).to.equal(dst)
+  })
+  it('should support manipulation', async function () {
+    const src = '{{ date | date: "%s" | minus : 604800  | date: "%Y-%m-%dT%H:%M:%S"}}'
+    const ctx = { date: new Date('2017-03-07 12:00:00.000+8:00') }
+    const dst = '2017-02-28T12:00:00'
+    expect(await liquid.parseAndRender(src, ctx)).to.equal(dst)
+  })
 })

test/unit/util/underscore.ts

@@ -18,6 +18,14 @@ describe('util/underscore', function () {
       expect(_.isString(123)).to.be.false
     })
   })
+  describe('.isNumber()', function () {
+    it('should return false for "foo"', function () {
+      expect(_.isNumber('foo')).to.be.false
+    })
+    it('should return true for 0', function () {
+      expect(_.isNumber(0)).to.be.true
+    })
+  })
   describe('.stringify()', function () {
     it('should respect to toLiquid() method', function () {
       expect(_.stringify({ toLiquid: () => 'foo' })).to.equal('foo')